code: def _get_string_categories(self) -> List[str]:
      return [str(c) for c in self.corpus.get_categories()]
  
file_path: scattertext/scattertext/categorygrouping/characteristic_grouper.py
imports: from typing import List, Optional, Callable, Dict, Tuple
  import pandas
  import numpy
  from scipy.stats import spearmanr
  from tqdm.auto import tqdm
  from scattertext.TermDocMatrix import TermDocMatrix
  from scattertext.categorygrouping.characteristic_embedder_base import CategoryEmbedderABC
  from scattertext.categorygrouping.rank_embedder import RankEmbedder
label_desc: Use image node_id 5 for calling the CharacteristicGrouper obj's underlying member method code with example usage: obj._get_string_categories() and returns: unknown